0.19.0

Enhancements

• Support for Vert.x-web+rxjava: #564

Fixes

• Stop wrapping runnables in executor instrumentation implementation: #564
  • Reflection error message is no longer printed in java 9+: WARNING: An illegal reflective access operation has occurred
• Prevent Rabbitmq instrumentation from eating exceptions: #604
  • Additional Rabbitmq error guarding: #607
• Remove benign debug-level message "QueueFullException" logged from ThreadPoolExecutorInstrumentation: #600
• Improve netty concurrency edge-cases: #587

0.18.0

• Enhancements

  • Add error-reporting for Kotlin GRPC #555
    • Thanks to @marcoferrer for the contribution!
  • Add support for DD_TRACE_AGENT_PORT setting #584
  • Improve component tag reporting #578
  • Log Java and JVM version info. #565

• Fixes

  • Reintroduce DDTracer constructor removed in 0.17.0 #579
  • Report correct throughput for tracers with high throughput. #571
  • Fix bug for servlets using async dispatch #582
    • Note: Said bug sometimes caused performance issues for servlet users.
  • Fix bug where Mssql traces would not report. Also improve debug logging around JDBC errors. #559 #557

0.17.0

Instrumentation

• New Instrumentation:
  • Rabbit AMQP #535
  • Dropwizard Views #529
• Existing instrumentation now enabled by default:
  • Akka HTTP #524
  • Spymemcached #519

Improvements

• Official support for Java 11 #480
• Include JMXFetch collection in dd-java-agent #505 #543
  • This allows metrics to automatically be collected and reported without the need to expose JMX to the datadog agent.
  • Disabled by default. Use the following system property to enable: -Ddd.jmxfetch.enabled=true
• Upgraded Byte Buddy to 1.9.2 #540
• Allow instrumenting Sun JMS clients #520
• Extend support for Apache HTTP Client to 4.0+ #521
  • Reduce extra spans
  • Support non-builder style usage
• Added tests for Vert.x #536

Bug Fixes

• Fix propagated trace/span ID serialization #534
• Fix issue with dd.trace.header.tags not working without an incoming propagated trace #542

0.16.0

Improvements

• Jax-RS Improvements
  • Report connection failures for Jersey and Resteasy Jax-RS clients #479
    • Other implementations will continue silently discarding the span.
  • Add slashes if missing from annotation path #500
• Remove elasticsearch.request.description to prevent sending sensitive info #506
• Better error handling for older JDBC drivers which don't support unwrapping #502
• Improve async trace propagation with Play 2.5 BodyParser #443

0.15.0

New Integrations (enabled by default)

• Spring Webflux (#460)
• Couchbase Client 2.0+ (#464, #495)

Enabled Integrations

• Elasticsearch (#471)
• JSP rendering (#472)

Improvements

• Stop tagging AWS request param data due to sensitive nature (#478)
• Limit size of Byte Buddy's type cache and evict unused (#468)
• Make JMS instrumentation more resilient to failure if message properties are read-only (#473)
• Fixed gap in Elasticsearch client 5.3-6.0 coverage (#494)
• Various improvements for integration compatibility checks

0.14.0

Improvements

• Officially Support Java 10. #414
  • Note: A warning of An illegal reflective access operation may print on startup. This will not affect runtime behavior.
  • A long-term fix is in progress to remove this warning.
• Enable async tracking for gRPC server calls #457
• Don't report traces with unfinished spans #459
  • Prevents reporting traces created by buggy uses of the OpenTracing API
  • Throughput count will still be preserved
• New Datadog APIs
  • MutableSpan#getRootSpan() #462
  • Tracer#addTraceInterceptor() #463

0.13.0

Important

• Fixes a potential memory leak when spans are created and not finished (since 0.5.0) #423

Improvements

• Netty 4.0+ instrumentation enabled by default #455, #456
• Apache HttpClient instrumentation has better error handling #417
• HttpUrlConnection instrumentation now separates connect, input, and output #425
• Spring Web and Jax-RS now have a separate span for the controller execution #430, #435
  • Also includes a span for rendering responses
• Replaced use of synchronized WeakMap's with WeakConcurrentMap #428
• Added runtime reference checks to ensure instrumentation is safe to apply #422, #427, #441, #447,

Bug Fixes

• Minor fixes to servlet instrumentation #439
• Fix some instrumentation not loading if class not loaded #426
• Reduce risk of classloading deadlock by making classloader paralell #448
• Fix netty http client trace context across connect #451

0.12.0

New Instrumentation (disabled by default)

• gRPC client and server 1.5+ #388
  • System property: dd.integration.grpc.enabled=true
  • Environment variable: DD_INTEGRATION_GRPC_ENABLED=true
• Akka HTTP client #377
  • System property: dd.integration.akka-http.enabled=true
  • Environment variable: DD_INTEGRATION_AKKA-HTTP_ENABLED=true

Improvements

• Better compatibility with other trace clients #392
  • Support unsigned 64 bit, instead of just 63 bits (signed).
• Allow mapping on configured service name #398
• Restructure spans created by HttpUrlConnection instrumentation #386
  • Still disabled by default. Enable as follows:
    • System property: dd.integration.httpurlconnection.enabled=true
    • Environment variable: DD_INTEGRATION_HTTPURLCONNECTION_ENABLED=true
• Improve Java 10 compatibility by removing cases of reflection #400 #414
• Simplify Servlet instrumentation and improve async handling #405
• Support OpenTracing service and peer.service tags for service naming #394
• Allow DDTraceResolver to be disabled via config #415
  • System property: dd.trace.resolver.enabled=false
  • Environment variable: DD_TRACE_RESOLVER_ENABLED=false
• Ignore empty value tags for dd.span.tags config #418
• Improve netty instrumentation handling when not using the netty-all dependency #411
  • Known issue with instrumentation when ChannelPipeline interface isn't loaded before the implementing class. Fixed in 0.13.0 #426

0.11.0

Improvements

• Make Lettuce instrumentation enabled by default #387
• Implement additional checks framework to prevent intrumentations being applied when dependencies are missing #383
• Add test build for Java 10 #384

Bugfixes

• Fix JDBC instrumentation causing additional requests to certain databases when using connection pools #382, fixes #379.

0.10.0

New Instrumentation (disabled by default)

• Netty Http Server and Client Instrumentation #352
  • System property: dd.integration.netty.enabled=true
  • Environment variable: DD_INTEGRATION_NETTY_ENABLED=true
• Generic JSP Instrumentation and Tomcat Jasper JSP Compilation Instrumentation #354
  • System property: dd.integration.jsp.enabled=true
  • Environment variable: DD_INTEGRATION_JSP_ENABLED=true
• Akka-Http Server Instrumentation #350
  • Instrumentation supports the Lagom Framework as well
  • System property: dd.integration.akka-http.enabled=true
  • Environment variable: DD_INTEGRATION_AKKA-HTTP_ENABLED=true
• Lettuce 5 redis client integration #336
  • System property: dd.integration.lettuce.enabled=true
  • Environment variable: DD_INTEGRATION_LETTUCE_ENABLED=true
• Elasticsearch Client Instrumentation #329
  • System property: dd.integration.elasticsearch.enabled=true
  • Environment variable: DD_INTEGRATION_ELASTICSEARCH_ENABLED=true
• URLConnection Instrumentation #340
  • Includes HttpURLConnection
  • System property: dd.integration.httpurlconnection.enabled=true
  • Environment variable: DD_INTEGRATION_HTTPURLCONNECTION_ENABLED=true
• Spymemcached Instrumentation #353
  • System property: dd.integration. spymemcached.enabled=true
  • Environment variable: DD_INTEGRATION_SPYMEMCACHED_ENABLED=true

Improvements

• Add Correlation Identifier for use with logging MDC Frameworks #345
  • https://docs.datadoghq.com/tracing/setup/java/#logging-and-mdc
• Set Servlet’s user-principal as a tag when available #371
• Reduce rounding errors for sub-ms spans #358
• Enhance JMS receive instrumentation #360
  • Trace calls without messages to consume
  • Instrument wait(timeout) calls
• Enhance threadpool instrumentation to work with SlickDB #341

Bugfixes

• Priority Sampling Implementation bug #373
• Async Servlet stops reporting traces #357 #364
• Cassandra Instrumentation fails to apply due to missing guava dependency #378
• Improve shutdown handling for apps without an explicit exit statement #347